﻿using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Runtime.InteropServices.WindowsRuntime;
using Windows.ApplicationModel;
using Windows.ApplicationModel.Activation;
using Windows.Foundation;
using Windows.Foundation.Collections;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Controls;
using Windows.UI.Xaml.Controls.Primitives;
using Windows.UI.Xaml.Data;
using Windows.UI.Xaml.Input;
using Windows.UI.Xaml.Media;
using Windows.UI.Xaml.Navigation;
// The Blank Application template is documented at http://go.microsoft.com/fwlink/?LinkId=234227
using Caliburn.Micro;
using F2S.LINQ2LinkedIn.Client.Common;
using F2S.LINQ2LinkedIn.Client.Services;
using F2S.LINQ2LinkedIn.Client.Storage;
using F2S.LINQ2LinkedIn.Client.ViewModels;
using WinRTXamlToolkit.Controls;
using WinRTXamlToolkit.Sample.Common;

namespace F2S.LINQ2LinkedIn.Client
{
    /// <summary>
    /// Provides application-specific behavior to supplement the default Application class.
    /// </summary>
    sealed partial class App 
    {
        private WinRTContainer _container;

        /// <summary>
        /// Initializes the singleton application object.  This is the first line of authored code
        /// executed, and as such is the logical equivalent of main() or WinMain().
        /// </summary>
        public App()
        {
            this.InitializeComponent();
            this.Suspending += OnSuspending;
        }

        /// <summary>
        /// Invoked when the application is launched normally by the end user.  Other entry points
        /// will be used such as when the application is launched to open a specific file.
        /// </summary>
        /// <param name="e">Details about the launch request and process.</param>
        protected override void OnLaunched(LaunchActivatedEventArgs e)
        {
            /*
#if DEBUG
            if (System.Diagnostics.Debugger.IsAttached)
            {
                this.DebugSettings.EnableFrameRateCounter = true;
            }
#endif
            */
            var rootFrame = Window.Current.Content as Frame;
            if (rootFrame == null)
            {
                // Create a Frame to act as the navigation context and navigate to the first page
                var frame = new AlternativeFrame();

                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
                {
                    //TODO: Load state from previously suspended application
                }

                // Place the frame in the current Window
                Window.Current.Content = frame;

                SuspensionManager.RegisterFrame(frame, "mainFrame");
            }
/*
            if (rootFrame.Content == null)
            {
                // When the navigation stack isn't restored navigate to the first page,
                // configuring the new page by passing required information as a navigation
                // parameter
                if (!rootFrame.Navigate(typeof(MainPage), e.Arguments))
                {
                    throw new Exception("Failed to create initial page");
                }
            }
            // Ensure the current window is active
            Window.Current.Activate();
             * */

            DisplayRootViewFor<MainViewModel>();
        }

        /// <summary>
        /// Invoked when application execution is being suspended.  Application state is saved
        /// without knowing whether the application will be terminated or resumed with the contents
        /// of memory still intact.
        /// </summary>
        /// <param name="sender">The source of the suspend request.</param>
        /// <param name="e">Details about the suspend request.</param>
        private void OnSuspending(object sender, SuspendingEventArgs e)
        {
            /*
            var deferral = e.SuspendingOperation.GetDeferral();
            //TODO: Save application state and stop any background activity
            deferral.Complete();
             * */
        }
        
        protected override void Configure()
        {
            base.Configure();

            _container = new WinRTContainer();
            _container.RegisterWinRTServices();
            _container.RegisterSharingService();

            _container
                .PerRequest<MainViewModel>()
                .PerRequest<MasterViewModel>()
                .PerRequest<RequiresAuthorizationViewModel>();
            
            _container.RegisterSingleton(typeof(IStorageManager), null, typeof(StorageManager));
            _container.RegisterSingleton(typeof(ILinkedInService), null, typeof(LinkedInService));
        }

        protected override object GetInstance(Type service, string key)
        {
            var instance = _container.GetInstance(service, key);
            if (instance != null)
                return instance;

            throw new Exception("Could not locate any instances.");
        }

        protected override IEnumerable<object> GetAllInstances(Type service)
        {
            return _container.GetAllInstances(service);
        }

        protected override void BuildUp(object instance)
        {
            _container.BuildUp(instance);
        }

        protected override void OnSearchActivated(SearchActivatedEventArgs args)
        {
            base.OnSearchActivated(args);
        }

        protected override void OnShareTargetActivated(ShareTargetActivatedEventArgs args)
        {
            base.OnShareTargetActivated(args);
        }
    }
}
